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English: This map shows the seismic hazard zones in the United States. It also shows the states which are at a higher risk of receiving earthquakes. It also shows the states which are at a higher risk of receiving earthquakes.
The first, six-level intensity scale was proposed by Egen in 1828 for an earthquake in Rhineland. [4] [5] Robert Mallet coined the term "isoseismal" and produced a map for the 1857 Basilicata earthquake with a three-fold intensity scale and used this and other information to identify the epicentral area (a term he also coined). [6]
Isoseismal map of the Eastern United States contoured to show the more localized variation' in the reported intensities for the 1886 Charleston earthquake. Contoured intensity levels are shown by arabic numerals
English: This map shows the seismic hazard zones in the United States. It also shows the states which are at a higher risk of receiving earthquakes. It also shows the states which are at a higher risk of receiving earthquakes.
The Seismic Hazard Mapping Act ("The Act") was enacted by the California legislature in 1990 following the Loma Prieta earthquake of 1989. The Act requires the California State Geologist to create maps delineating zones where data suggest amplified ground shaking, liquefaction, or earthquake-induced landsliding may occur ("seismic hazard zones").
The San Diego Trough Fault Zone is a group of connected right-lateral strike-slip faults that run parallel to the coast of Southern California, United States, for 150–166 km (93–103 mi). The fault zone takes up 25% of the slip within the Inner Continental Borderlands. Portions of the fault get within 30 km (19 mi) of populated cities ...
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This list covers all faults and fault-systems that are either geologically important [clarification needed] or connected to prominent seismic activity. [clarification needed] It is not intended to list every notable fault, but only major fault zones.